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A Comparative Review of Hot and Warm Mix Asphalt Technologies from Environmental and Economic Perspectives: Towards a Sustainable Asphalt Pavement

Author

Listed:
  • Abdalrhman Milad

    (Department of Civil and Environmental Engineering, College of Engineering, University of Nizwa, P.O. Box 33, Nizwa PC 616, Ad-Dakhliyah, Oman)

  • Ali Mohammed Babalghaith

    (Centre for Transportation Research, Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia)

  • Abdulnaser M. Al-Sabaeei

    (Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Perak, Malaysia)

  • Anmar Dulaimi

    (College of Engineering, University of Warith Al-Anbiyaa, Karbala 56001, Iraq
    School of Civil Engineering and Built Environment, Liverpool John Moores University, Liverpool L3 5UX, UK)

  • Abdualmtalab Ali

    (Department of Civil Engineering, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John’s, NL A1B 3X5, Canada)

  • Sajjala Sreedhar Reddy

    (Department of Civil and Environmental Engineering, College of Engineering, University of Nizwa, P.O. Box 33, Nizwa PC 616, Ad-Dakhliyah, Oman)

  • Munder Bilema

    (Department of Civil Technology, College of Science Technology-Qaminis, Qaminis, Libya)

  • Nur Izzi Md Yusoff

    (Department of Civil Engineering, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Malaysia)

Abstract

The environmental concerns of global warming and energy consumption are among the most severe issues and challenges facing human beings worldwide. Due to the relatively higher predicted temperatures (150–180 °C), the latest research on pavement energy consumption and carbon dioxide (CO 2 ) emission assessment mentioned contributing to higher environmental burdens such as air pollution and global warming. However, warm-mix asphalt (WMA) was introduced by pavement researchers and the road construction industry instead of hot-mix asphalt (HMA) to reduce these environmental problems. This study aims to provide a comparative overview of WMA and HMA from environmental and economic perspectives in order to highlight the challenges, motivations, and research gaps in using WMA technology compared to HMA. It was discovered that the lower production temperature of WMA could significantly reduce the emissions of gases and fumes and thus reduce global warming. The lower production temperature also provides a healthy work environment and reduces exposure to fumes. Replacing HMA with WMA can reduce production costs because of the 20–75% lower energy consumption in WMA production. It was also released that the reduction in energy consumption is dependent on the fuel type, energy source, material heat capacity, moisture content, and production temperature. Other benefits of using WMA are enhanced asphalt mixture workability and compaction because the additives in WMA reduce asphalt binder viscosity. It also allows for the incorporation of more waste materials, such as reclaimed asphalt pavement (RAP). However, future studies are recommended on the possibility of using renewable, environmentally friendly, and cost-effective materials such as biomaterials as an alternative to conventional WMA-additives for more sustainable and green asphalt pavements.

Suggested Citation

  • Abdalrhman Milad & Ali Mohammed Babalghaith & Abdulnaser M. Al-Sabaeei & Anmar Dulaimi & Abdualmtalab Ali & Sajjala Sreedhar Reddy & Munder Bilema & Nur Izzi Md Yusoff, 2022. "A Comparative Review of Hot and Warm Mix Asphalt Technologies from Environmental and Economic Perspectives: Towards a Sustainable Asphalt Pavement," IJERPH, MDPI, vol. 19(22), pages 1-23, November.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:22:p:14863-:d:970189
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    References listed on IDEAS

    as
    1. Feng Ma & Aimin Sha & Ruiyu Lin & Yue Huang & Chao Wang, 2016. "Greenhouse Gas Emissions from Asphalt Pavement Construction: A Case Study in China," IJERPH, MDPI, vol. 13(3), pages 1-15, March.
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    Cited by:

    1. Michael R. Gruber & Bernhard Hofko, 2023. "Life Cycle Assessment of Greenhouse Gas Emissions from Recycled Asphalt Pavement Production," Sustainability, MDPI, vol. 15(5), pages 1-23, March.

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